CN109729330B - High-resolution projection display device - Google Patents
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- CN109729330B CN109729330B CN201910166504.3A CN201910166504A CN109729330B CN 109729330 B CN109729330 B CN 109729330B CN 201910166504 A CN201910166504 A CN 201910166504A CN 109729330 B CN109729330 B CN 109729330B
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Abstract
The invention provides a high-resolution projection display device. The high-resolution projection display device consists of a grating curtain, a first projector, a second projector, a third projector, a fourth projector and a computer control system. The computer control system can sample a high-definition image according to a 2 x 2 pixel period, form a first projection image, a second projection image, a third projection image and a fourth projection image respectively by an upper right pixel, an upper left pixel, a lower right pixel and a lower left pixel in the 2 x 2 period, and send the first projection image, the second projection image, the third projection image and the fourth projection image to the first projector, the second projector and the fourth projector respectively for projection. The grating curtain consists of a lens array and a reverse light scattering layer, and can form images of first to fourth projection images projected by first to fourth projectors and synthesize the images into original high-definition images. The device realizes image projection by a plurality of projectors together, and the number of displayed image pixels is the sum of the plurality of projectors, so that high-resolution image display can be realized.
Description
Technical Field
The present invention relates to display technology, and more particularly, to projection display technology.
Background
The projection display device can project an image onto a screen, which is advantageous in terms of picture size compared to a conventional flat panel display device. In general, a conventional projection apparatus performs projection only by a single projector, and the resolution of an image is determined by the resolution of the single projector. When the application scene needs to realize high-resolution projection display, the traditional projection device will encounter a bottleneck. Therefore, the present invention provides a high-resolution projection display apparatus that can realize image projection by a plurality of projectors, thereby realizing high-resolution image display.
Disclosure of Invention
The invention provides a high-resolution projection display device. Fig. 1 is a schematic structural diagram of the high-resolution projection display device. The high-resolution projection device consists of a grating curtain, a first projector, a second projector, a third projector, a fourth projector and a computer control system. The first projector, the second projector, the third projector and the fourth projector are arranged to form an array. The computer control system may sample a high-definition image at a 2 × 2 pixel period and form a first projection image, a second projection image, a third projection image, and a fourth projection image from an upper-right pixel, an upper-left pixel, a lower-right pixel, and a lower-left pixel in the 2 × 2 period, respectively. The obtained first projection image, second projection image, third projection image and fourth projection image are sent to the first projector, the second projector, the third projector and the fourth projector respectively for projection. The first projector, the second projector, the third projector, and the fourth projector may project projection images corresponding thereto to the same position of the raster curtain. The grating curtain consists of a lens array and a light reflection and scattering layer. The reverse light scattering layer has high reflectivity and scattering characteristics, and can reflect light incident thereon to various directions. The lenses on the lens array can focus the light rays from the first projector, the second projector, the third projector and the fourth projector at different positions of the reflective light scattering layer respectively, and form a first projection image light spot, a second projection image light spot, a third projection image light spot and a fourth projection light spot. The first projection image light spot, the second projection image light spot, the third projection image light spot and the fourth projection light spot can be imaged by the lens array to form a first projection image light spot image, a second projection image light spot image, a third projection image light spot image and a fourth projection light spot image. The first projection image light spot image, the second projection image light spot image, the third projection image light spot image and the fourth projection light spot image are arranged according to the positions of an upper right pixel, an upper left pixel, a lower right pixel and a lower left pixel in a 2 x 2 pixel period of the original high-definition image and are combined to form the original high-definition image.
Preferably, the size of a single pixel of the image projected by the first projector, the second projector, the third projector and the fourth projector at the raster curtain is equal to the lens array pitch.
Preferably, the distance from the lens array to the reverse light scattering layer is less than the lens focal length, and the first, second, third and fourth projected image spots may form an erect virtual image through the lens array.
Alternatively, referring to the display principle of the first projector, the second projector, the third projector and the fourth projector, the computer system may be provided with more projectors for image projection.
In the invention, because a plurality of projectors can be used for displaying images, the total pixel number of the displayed images is the sum of the pixel numbers of the plurality of projectors, and compared with the traditional projection device only using a single projector, the invention can obviously improve the resolution of the images.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a schematic structural diagram of the grating curtain of the present invention.
Fig. 3 is a schematic diagram of a projector forming light spots on a grating curtain according to the present invention.
Fig. 4 is a schematic diagram of an optical path of a light spot in a virtual image in the horizontal direction through a lens in the invention.
Fig. 5 is a schematic diagram of an optical path of a light spot forming a virtual image in the vertical direction through a lens in the invention.
An icon: 010-high resolution projection display devices; 100-a grating curtain; 210-a first projector; 220-a second projector; 230-a third projector; 240-a fourth projector; 300-a computer control system; 020-grating curtain structure; 110-a lens array; 120-a reverse light scattering layer; 030-projector projection light path; 111-a lens; 410-a first projected image spot; 420-a second projected image spot; 430-a third projected image spot; 440-a fourth projected image spot; 040-the facula forms the light path of the virtual image in the horizontal direction through the lens; 510-a first projected image speckle image; 520-second projected image light spot image; 050-the light spots form virtual image light paths in the vertical direction through the lenses; 540-fourth projected image speckle image.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", and the like are used for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
Fig. 1 is a schematic structural diagram of a high-resolution projection display device 010 according to this embodiment. In the figure the x-coordinate represents the horizontal direction in space, the y-coordinate represents the vertical direction in space and z represents the direction perpendicular to the x-y plane. Referring to fig. 1, the present embodiment provides a high resolution projection display device 010, which includes a raster curtain 100, a first projector 210, a second projector 220, a third projector 230, a fourth projector 240, and a computer control system 300. The first projector 210, the second projector 220, the third projector 230 and the fourth projector 240 are arranged at equal intervals and arranged to form an array.
The high-resolution projection display device 010 according to the present embodiment will be further described below.
The computer control system 300 may sample a high-definition image in a 2 × 2 pixel cycle and form a first projection image, a second projection image, a third projection image, and a fourth projection image from an upper right pixel, an upper left pixel, a lower right pixel, and a lower left pixel in the 2 × 2 cycle, respectively. The obtained first, second, third and fourth projection images are sent to the first projector 210, the second projector 220, the third projector 230 and the fourth projector 240, respectively, and projected.
Fig. 2 is a schematic structural diagram of a raster curtain. The lenticular curtain 100 is composed of a lens array 110 and a light reflecting and scattering layer 120. The light reflection and scattering layer 120 is coated with a reflective material and has an uneven surface, so that it is easy to implement diffused reflection and reflects light incident thereon in various directions.
The first projector 210, the second projector 220, the third projector 230, and the fourth projector 240 may project the projection images corresponding thereto to the same position of the raster curtain 100. The first projector 210, the second projector 220, the third projector 230, and the fourth projector 240 project images at the raster curtain having a size of a single pixel equal to a lens array pitch.
Fig. 3 is a schematic diagram of the projector forming a light spot on the raster curtain. Since the first projector 210, the second projector 220, the third projector 230, and the fourth projector 240 are located at different positions in space, the emitted light should be incident on the same lens 111 on the lens array 110 at different angles. Due to the converging action of the lens 111 on the light, the light from the first projector 210 will form a first projection image spot 410; light from the second projector 220 will form a second projected image spot 420; light from third projector 230 will form third projected image spot 430; light from the fourth projector 240 will form a fourth projected image spot 440. The four projected image light spots are not overlapped with each other.
As shown in fig. 4, it is a schematic diagram of the optical path of the light spot virtually imaged in the horizontal direction by the lens. Due to the function of the light reflection scattering layer, after the light emitted by the first projector 210 and the second projector 220 forms the first projection image spot 410 and the second projection image spot 420, the light reflected by the light reflection scattering layer can be imaged by the lens 111. In this embodimentThere is provided a high resolution projection display device 010 in which the distance from the lens array 110 to the reverse light scattering layer 120 is smaller than the focal length of the lens 111fReferring to the lens imaging principle, the first projection image spot 410 and the second projection image spot 420 may be in erect virtual images via the lens 111. The horizontal arrangement sequence of the first projection image light spot image 510 and the second projection image light spot image 520 formed by the light spots is the same as the pixel arrangement sequence of the original high-definition image.
As shown in fig. 5, it is a schematic diagram of the optical path of the light spot virtually imaged in the vertical direction through the lens. Due to the function of the reflective light scattering layer, after the light emitted by the second projector 220 and the fourth projector 240 forms the second projection image spot 420 and the fourth projection image spot 440, the light reflected by the reflective light scattering layer can be imaged by the lens 111. In the high-resolution projection display device 010 provided in this embodiment, the distance from the lens array 110 to the counter light scattering layer 120 is smaller than the focal length of the lens 111fReferring to the lens imaging principle, the second projection image spot 420 and the fourth projection image spot 440 may be in erect virtual images via the lens 111. The arrangement sequence of the second projection image light spot image 520 and the fourth projection image light spot image 540 formed by the light spots in the vertical direction is the same as the pixel arrangement sequence of the original high-definition image.
According to the principle, the first projection image light spot image 510, the second projection image light spot image 520, the third projection image light spot image 530 and the fourth projection image light spot image 540 formed on each lens 111 on the lens 110 are sequentially arranged and combined to form the original high-definition image.
In this embodiment, the resolution of the first projector 210, the second projector 220, the third projector 230, and the fourth projector 240 is 1000 × 1000, and since four projectors can be used to simultaneously display an image, the total number of pixels of the displayed image is the sum of the number of pixels of the plurality of projectors, and the resolution is 2000 × 2000.
Claims (3)
1. A high resolution projection display device, characterized by: the high-resolution projection display device comprises a grating curtain, a first projector, a second projector, a third projector, a fourth projector and a computer control system, wherein the first projector, the second projector, the third projector and the fourth projector are arranged to form an array, the computer control system can sample a high-definition image according to a 2 x 2 pixel period, and respectively form a first projection image, a second projection image, a third projection image and a fourth projection image by an upper right pixel, an upper left pixel, a lower right pixel and a lower left pixel in the 2 x 2 period, and the obtained first projection image, second projection image, third projection image and fourth projection image are respectively sent to the first projector, the second projector, the third projector and the fourth projector for projection, the first projector, the second projector, the third projector and the fourth projector can project corresponding projection images to the same position of the grating curtain, the grating curtain is composed of a lens array and a reverse light scattering layer, the reverse light scattering layer has high reflectivity and scattering property and can reflect light incident on the reverse light scattering layer to various directions, the lens on the lens array can focus the light from the first projector, the second projector, the third projector and the fourth projector to different positions of the reverse light scattering layer respectively to form a first projection image light spot, a second projection image light spot, a third projection image light spot and a fourth projection light spot, and the first projection image light spot, the second projection image light spot, the third projection image light spot and the fourth projection light spot can be imaged through the lens array to form a first projection image light spot image, a second projection image light spot image, a third projection image light spot image and a fourth projection light spot image, the first projection image light spot image, the second projection image light spot image, the third projection image light spot image and the fourth projection light spot image are arranged according to the positions of an upper right pixel, an upper left pixel, a lower right pixel and a lower left pixel in a 2 x 2 pixel period of an original high-definition image and are combined to form the original high-definition image, and the first projector, the second projector, the third projector and the fourth projector project images on the grating curtain, wherein the size of a single pixel of each image is equal to the pitch of a lens array.
2. A high resolution projection display device according to claim 1, wherein: the distance from the lens array to the reflective light scattering layer is smaller than the focal length of the lens, and the first projection image light spot, the second projection image light spot, the third projection image light spot and the fourth projection image light spot form an erect virtual image through the lens array.
3. A high resolution projection display device according to claim 1, wherein: according to the display principle of the first projector, the second projector, the third projector and the fourth projector, the computer system is provided with more additional projectors for projecting images.
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Effective date of registration: 20231129 Address after: 509 Kangrui Times Square, Keyuan Business Building, 39 Huarong Road, Gaofeng Community, Dalang Street, Longhua District, Shenzhen, Guangdong Province, 518000 Patentee after: Shenzhen Litong Information Technology Co.,Ltd. Address before: 611730 No.1, Section 2, Zhongxin Avenue, Pidu District, Chengdu City, Sichuan Province Patentee before: CHENGDU TECHNOLOGICAL University |
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